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Displaying records 651 to 660 of 733 records.
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651. The Need for a Robust Precise Time and Frequency Alternative to Global Navigation Satellite Systems
Topic: Physics
Published: 9/17/2012
Authors: Michael A Lombardi, Mitch Narins, Per Engen, Ben Peterson, Sherman Lo, Dennis Akos
Abstract: Positioning, Navigation, and Timing (PNT) services are key enablers of both essential safety and security applications and economically beneficial capacity and efficiency applications worldwide. Whether users are ground-based, sea-based or in the air ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912521

652. The New SI: The Role of CODATA
Topic: Physics
Published: 12/1/2011
Authors: David B Newell, Peter J Mohr, Barry Norman Taylor
Abstract: The mission of the International Council for Science : Committee on Data for Science and Technology (CODATA ) is to strengthen international science for the benefit of society by promoting improved scientific and technical data management and use. ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908747

653. The Nuts and Bolts and Results of Fluorine Bomb Calorimetry
Topic: Physics
Published: 12/1/1999
Author: P A O'Hare
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=100741

654. The Relativistic Red Shift with 2 {multiply} 10^u-17^ Uncertainty at NIST, Boulder, CO USA
Topic: Physics
Published: 1/1/2000
Authors: N K Pavlis , Marc A Weiss
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=105543

655. The SIM Time Network
Topic: Physics
Published: 3/1/2011
Authors: Michael A Lombardi, Andrew N Novick, J. Mauricio Lopez-Romero, Francisco Jimenez, Eduardo de Carlos Lopez, Jean-Simon Boulanger, Raymond Pelletier, Ricardo de Carvalho, Raul Solis, Harold Sanchez, Carlos Andres Quevedo, Gregory Pascoe, Daniel Perez, Eduardo Bances, Leonardo Trigo, Victor Masil, Henry Postigo, Anthony Questelles
Abstract: The Sistema Interamericano de Metrologia (SIM) is a regional metrology organization (RMO) whose members are the national metrology institutes (NMIs) located in the 34 nations of the Organization of American States (OAS). The SIM/OAS region extends t ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905218

656. The SIM Time Network and its Contributions to Metrology in the Americas
Topic: Physics
Published: 4/1/2009
Author: Michael A Lombardi
Abstract: The SIM Time Network (SIMTN) has been one of the great success stories of the Sistema Interamericano de Metrologia (SIM), a regional metrology organization (RMO) that includes the 34 member nations of the Organization of American States (OAS). The S ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902059

657. The SIM Time and Frequency Network
Topic: Physics
Published: 12/1/2008
Authors: Michael A Lombardi, Andrew N Novick, Jose M. Lopez, Francisco Jimenez, Jean-Simon Boulanger, Raymond Pelletier, Ricardo de Carvalho, Raul Solis, Carlos Donado, Harold Sanchez, Carlos Andres Quevedo, Gregory Pascoe, Daniel Perez
Abstract: The {I}Sistema Interamericano de Metrologia{/I} (SIM) consists of national metrology institutes (NMIs) located in the 34 member nations of the Organization of American States (OAS), which extends throughout North, Central, and South America, and the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=842555

658. The SIM time scale
Topic: Physics
Published: 4/20/2013
Authors: Michael A Lombardi, J. Mauricio Lopez-Romero, Nelida Diaz-Munoz, E. de Carlos-Lopez
Abstract: Time measurement is of great importance for science, technology and commerce. Among the seven base units of the International System (SI), the second can be realized with the smallest uncertainty, currently reaching parts in 10^u16^. Keeping track of ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910952

659. The evolving optical frequency comb
Topic: Physics
Published: 10/22/2010
Author: Scott A Diddams
Abstract: Much as natural historians search for the first roots of our human race, curiosity drives the laser scientist to pursue the roots of his or her own field. This is especially the case in this year where our community celebrates the 50th anniversary o ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906176

660. The global positioning system, relativity, and extraterrestrial navigation
Topic: Physics
Published: 4/27/2009
Author: Neil Ashby
Abstract: Relativistic effects play an important role in the performance of the Global Positioning System (GPS) and in world-wide time comparisons. The GPS has provided a model for algorithms that take relativistic effects into account. In the future explorati ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904814



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